| From: | Richard Guo <guofenglinux(at)gmail(dot)com> |
|---|---|
| To: | Ayush Tiwari <ayushtiwari(dot)slg01(at)gmail(dot)com> |
| Cc: | Pg Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: plpython: NULL pointer dereference on broken sequence objects |
| Date: | 2026-06-26 06:05:40 |
| Message-ID: | CAMbWs4_beAx9kD4NqX3j70TaMVkpSG57y+_barFF2hGUK3yeBA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Jun 25, 2026 at 10:05 PM Ayush Tiwari
<ayushtiwari(dot)slg01(at)gmail(dot)com> wrote:
> I think there's a similar problem on the mapping side that v1 doesn't
> cover. PLyMapping_ToJsonbValue and the hstore equivalent fetch items with
> PyMapping_Items() and PyList_GetItem() without checking for NULL, and a
> mapping whose items() raises still would crash the backend.
Right. Those functions have the same issue as PySequence_GetItem().
The attached v2 patch fixes them all.
- Richard
| Attachment | Content-Type | Size |
|---|---|---|
| v2-0001-plpython-Fix-NULL-pointer-dereferences-for-broken.patch | application/octet-stream | 24.0 KB |
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